120 lines
3.5 KiB
C#
120 lines
3.5 KiB
C#
//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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//
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// System.Web.UI.HtmlControls.HtmlInputHidden.cs
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//
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// Authors:
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// Jackson Harper (jackson@ximian.com)
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//
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// (C) 2005-2010 Novell, Inc.
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using System.ComponentModel;
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using System.Collections.Specialized;
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using System.Security.Permissions;
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namespace System.Web.UI.HtmlControls {
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// CAS
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[AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
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[AspNetHostingPermission (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
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// attributes
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[DefaultEvent ("ServerChange")]
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[SupportsEventValidation]
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public class HtmlInputHidden : HtmlInputControl, IPostBackDataHandler {
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static readonly object ServerChangeEvent = new object ();
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public HtmlInputHidden () : base ("hidden")
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{
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}
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bool LoadPostDataInternal (string postDataKey, NameValueCollection postCollection)
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{
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string data = postCollection [postDataKey];
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if (data != null && data != Value) {
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ValidateEvent (postDataKey, String.Empty);
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Value = data;
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return true;
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}
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return false;
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}
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void RaisePostDataChangedEventInternal ()
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{
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OnServerChange (EventArgs.Empty);
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}
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protected virtual bool LoadPostData (string postDataKey, NameValueCollection postCollection)
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{
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return LoadPostDataInternal (postDataKey, postCollection);
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}
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protected virtual void RaisePostDataChangedEvent ()
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{
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RaisePostDataChangedEventInternal ();
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}
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bool IPostBackDataHandler.LoadPostData (string postDataKey,
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NameValueCollection postCollection)
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{
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return LoadPostData (postDataKey, postCollection);
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}
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void IPostBackDataHandler.RaisePostDataChangedEvent ()
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{
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RaisePostDataChangedEvent ();
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}
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protected override void RenderAttributes (HtmlTextWriter writer)
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{
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Page page = Page;
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if (page != null)
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page.ClientScript.RegisterForEventValidation (Name);
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base.RenderAttributes (writer);
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}
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protected internal override void OnPreRender (EventArgs e)
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{
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base.OnPreRender (e);
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Page page = Page;
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if (page != null && !Disabled) {
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page.RegisterRequiresPostBack (this);
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page.RegisterEnabledControl (this);
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}
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}
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protected virtual void OnServerChange (EventArgs e)
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{
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EventHandler handler = (EventHandler) Events [ServerChangeEvent];
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if (handler != null)
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handler (this, e);
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}
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[WebSysDescription("")]
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[WebCategory("Action")]
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public event EventHandler ServerChange {
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add { Events.AddHandler (ServerChangeEvent, value); }
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remove { Events.RemoveHandler (ServerChangeEvent, value); }
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}
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}
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}
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